What does StackOptic analyze?

StackOptic runs 18 analysis modules on any public website from a single URL. It detects 7,000+ technologies (CMS, frameworks, analytics, payments, CDN, hosting), evaluates SSL certificates and HTTP security headers with grades from A+ to F, measures Core Web Vitals (LCP, CLS, TBT, FCP), audits SEO meta tags and structured data, checks email security (SPF, DKIM, DMARC), analyzes AI & LLM readiness including bot access and llms.txt validation, extracts color palettes and typography, estimates carbon footprint, and generates permanent shareable reports.

Does it work on sites behind Cloudflare or bot protection?

Yes. StackOptic uses a real browser engine that loads pages exactly like a human visitor — executing JavaScript, rendering CSS, and handling redirects. This allows it to bypass Cloudflare, LiteSpeed, Sucuri, and other bot protection systems where traditional crawlers and HTTP-only tools fail.

What do I get on the free plan?

The free plan includes 5 analyses per day with access to all 18 modules, full scores, technology detection, and security grades. Every report is permanently accessible via a unique shareable URL — no login required to view. No credit card needed. AI-powered insights, re-analysis, PDF/JSON export, and comparison features are available on Pro ($24/mo) and Agency ($99/mo) plans.

What is AI & LLM readiness analysis?

This module evaluates how visible and citable your website is to AI search engines like ChatGPT, Perplexity, Google AI Overviews, and Claude. It audits access permissions for 8 major AI bots, validates llms.txt and llms-full.txt files, scores citation-ready content structure, and analyzes structured data (JSON-LD) for GEO readiness — helping you rank in the next generation of search.

How long does an analysis take?

Most analyses complete in under 10 seconds. StackOptic runs all 18 modules in parallel using a real browser session, so you get technology detection, security audit, performance metrics, SEO analysis, and AI readiness scoring simultaneously.

How accurate are the results?

Detection is based on real browser execution — DOM inspection, JavaScript runtime analysis, HTTP headers, and DNS records. With 7,000+ technology signatures and Lighthouse-calibrated performance scoring, StackOptic achieves high accuracy for mainstream technologies.

What security checks are performed?

The security module evaluates SSL/TLS certificates, 12+ HTTP security headers (HSTS, CSP, X-Frame-Options, Permissions-Policy, Referrer-Policy), HTTPS enforcement, and email authentication (SPF, DKIM, DMARC). Each site receives a letter grade from A+ to F with specific remediation steps.

Do you store the websites I analyze?

StackOptic only stores publicly available information that any visitor to a website would see — HTML content, HTTP headers, DNS records, and screenshots. We do not access private data, log in to websites, or perform any intrusive testing.

Back to Search

sigmaaldrich.com

https://sigmaaldrich.com· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

sigmaaldrich.com

Sponsored

Hosting Provider

Incapsula Inc

IP Address

45.60.86.93

Server Location

🇺🇸 New York, United States

ASN

AS19551

Organization

Incapsula Inc

Server

OpenResty

CDN

Akamai

WAF

Akamai

Nameservers

ns02.brandshelter.net.ns01.brandshelter.com.

Performance

Page Speed

6.2 MB

175 requests

0–49

50–89

90–100

Architecture Stack

JAMstack

🔀 Hybrid

Decoupled

Frontend

Framework

Next.js

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Incapsula Inc

CDN

Akamai

Detected API Sources

https://api.demandbase.com/api...

Technology Stack

16 Technologies Detected

CSS Frameworks

Bootstrap

Tailwind CSS

Ant Design Material UI

Advertising

Google Ads Twitter Ads LinkedIn Ads Microsoft Advertising

Meta Frameworks

Analytics

Tag Managers

Other

Web Servers

Customer Support

SEO Analysis

A82/100

sigmaaldrich.comsigmaaldrich.com

Merck | Finland | Life Science Products & Service Solutions

Together, we impact life and health with science. We offer one of the broadest portfolios in the industry for scientists, best-in-class products for pharmace...

Description truncated.

Title Length59 chars

Recommended: 50-60 chars

Description Length316 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

Upgrade to view details

Sponsored

Security Score

61%Fair

Interactive

HTTPS

WAF

183d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

Valid From

18.08.2025

Valid Until

18.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

www.sigmaaldrich.comadm.sigmaaldrich.comadmqws.sigmaaldrich.comapi.sigmaaldrich.comapiqws.sigmaaldrich.comb2b.sigmaaldrich.comb2bqws.sigmaaldrich.comperfqws.sigmaaldrich.com+12 more

SHA-256 Fingerprint

E5:22:1E:BA:D0:0C:C2:37:6A:A5:78:FF:06:74:86:75:9C:22:3B:9E...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

server

openresty

content-type

text/html; charset=utf-8

access-control-allow-origin

etag

"dknr0hjhq3ndu9:dtagent10329260206100503sbnq:dtagent10329260...

x-oneagent-js-injection

true

x-ruxit-js-agent

true

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

mxa-005f4802.gslb.pphosted.com

mxb-005f4802.gslb.pphosted.com

Domain Information

sigmaaldrich.com

Domain Age

27y 7m

Created

20.07.1998

Expires

19.07.2026

Last Updated

16.12.2025

Registrar

Key-Systems GmbH

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

Typography & Readability

Noto Sans SC

73/100

Readability

/30

32/40

14px · LH 1.43

Hierarchy

/20

25/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Noto Sans SC

Sans28px

Body Font

Noto Sans SC

Sans14px

Contrast Ratio

Reading Comfort

~95 CPL

Needs attention

28px

20px

18px

14px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.43 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

✅ Good performance: Using 1 font families keeps load times fast.

✅ Consistent design: Single font family with weight variations is a modern best practice.

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

A/B Testing & Optimization

OptimizelyEnterprise

Experimentation and conversion optimization

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(15)googletagmanager.com(1)api.demandbase.com(1)cdn3.optimizely.com(1)cdn.cookielaw.org(1)

Website Identity